131 lines
3.5 KiB
Go
131 lines
3.5 KiB
Go
// Copyright 2017 the gousb Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package usb
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import (
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"reflect"
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"testing"
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"time"
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)
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func TestEndpoint(t *testing.T) {
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defer func(i libusbIntf) { libusb = i }(libusb)
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for _, epCfg := range []struct {
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method string
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InterfaceSetup
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EndpointInfo
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}{
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{"Read", testBulkInSetup, testBulkInEP},
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{"Write", testIsoOutSetup, testIsoOutEP},
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} {
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t.Run(epCfg.method, func(t *testing.T) {
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for _, tc := range []struct {
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desc string
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buf []byte
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ret int
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status TransferStatus
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want int
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wantErr bool
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}{
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{
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desc: "empty buffer",
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buf: nil,
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ret: 10,
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want: 0,
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},
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{
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desc: "128B buffer, 60 transferred",
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buf: make([]byte, 128),
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ret: 60,
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want: 60,
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},
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{
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desc: "128B buffer, 10 transferred and then error",
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buf: make([]byte, 128),
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ret: 10,
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status: LIBUSB_TRANSFER_ERROR,
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want: 10,
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wantErr: true,
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},
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} {
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lib := newFakeLibusb()
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libusb = lib
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ep := newEndpoint(nil, epCfg.InterfaceSetup, epCfg.EndpointInfo, time.Second, time.Second)
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op, ok := reflect.TypeOf(ep).MethodByName(epCfg.method)
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if !ok {
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t.Fatalf("method %s not found in endpoint struct", epCfg.method)
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}
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go func() {
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fakeT := lib.waitForSubmitted()
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fakeT.length = tc.ret
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fakeT.status = tc.status
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close(fakeT.done)
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}()
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opv := op.Func.Interface().(func(*Endpoint, []byte) (int, error))
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got, err := opv(ep, tc.buf)
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if (err != nil) != tc.wantErr {
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t.Errorf("%s: bulkInEP.Read(): got err: %v, err != nil is %v, want %v", tc.desc, err, err != nil, tc.wantErr)
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continue
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}
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if got != tc.want {
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t.Errorf("%s: bulkInEP.Read(): got %d bytes, want %d", tc.desc, got, tc.want)
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}
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}
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})
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}
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}
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func TestEndpointWrongDirection(t *testing.T) {
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ep := &Endpoint{
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InterfaceSetup: testBulkInSetup,
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Info: testBulkInEP,
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}
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_, err := ep.Write([]byte{1, 2, 3})
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if err == nil {
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t.Error("bulkInEP.Write(): got nil error, want non-nil")
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}
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ep = &Endpoint{
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InterfaceSetup: testIsoOutSetup,
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Info: testIsoOutEP,
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}
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_, err = ep.Read(make([]byte, 64))
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if err == nil {
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t.Error("isoOutEP.Read(): got nil error, want non-nil")
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}
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}
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func TestOpenEndpoint(t *testing.T) {
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origLib := libusb
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defer func() { libusb = origLib }()
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libusb = newFakeLibusb()
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c := NewContext()
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dev, err := c.OpenDeviceWithVidPid(0x8888, 0x0002)
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if dev == nil {
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t.Fatal("OpenDeviceWithVidPid(0x8888, 0x0002): got nil device, need non-nil")
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}
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defer dev.Close()
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if err != nil {
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t.Fatalf("OpenDeviceWithVidPid(0x8888, 0x0002): got error %v, want nil", err)
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}
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got, err := dev.OpenEndpoint(0x86, 1, 1, 2)
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if err != nil {
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t.Fatalf("OpenEndpoint(cfg=1, if=1, alt=2, ep=0x86): got error %v, want nil", err)
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}
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if want := fakeDevices[1].Configs[0].Interfaces[1].Setups[2].Endpoints[1]; !reflect.DeepEqual(got.Info, want) {
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t.Errorf("OpenEndpoint(cfg=1, if=1, alt=2, ep=0x86): got %+v, want %+v", got, want)
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}
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}
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